Fixed: [Does clixon cli support autocompletion for leafrefs pointed to another module?](https://github.com/clicon/clixon/issues/455)

CHANGELOG.md

@@ -47,6 +47,7 @@ Expected: December 2023
 
 ### Corrected Bugs
 
+* Fixed: [Does clixon cli support autocompletion for leafrefs pointed to another module?](https://github.com/clicon/clixon/issues/455)
 * Fixed: [commit diff sometimes includes namespace in output](https://github.com/clicon/clixon-controller/issues/44)
 
 ## 6.4.0

apps/cli/cli_show.c

@@ -74,10 +74,17 @@
 #include "cli_autocli.h"
 #include "cli_common.h" /* internal functions */
 
-/*! Given an xpath encoded in a cbuf, append a second xpath into the first
+/*! Given an xpath encoded in a cbuf, append a second xpath into the first (unless absolute path)
  *
  * The method reuses prefixes from xpath1 if they exist, otherwise the module prefix
  * from y is used. Unless the element is .., .
+ * @param[in,out] cb0     Result XPath as cbuf
+ * @param[in]     xpath1  Input XPath
+ * @param[in]     y       Yang of xpath1
+ * @param[in,out] nsc     Namespace
+ * @retval        0       OK
+ * @retval       -1       Error
+ *
  * XXX: Predicates not handled
  * The algorithm is not fool-proof, there are many cases it may not work
  * To make it more complete, maybe parse the xpath to a tree and put it
@@ -86,8 +93,6 @@
      goto done;
    if (xpath_tree2cbuf(xpt, xcb) < 0)
      goto done;
-and
-traverse_canonical
  */
 static int
 xpath_append(cbuf      *cb0,
@@ -105,6 +110,9 @@ xpath_append(cbuf      *cb0,
     char  *prefix = NULL;
     int    initialups = 1; /* If starts with ../../.. */
     char  *xpath0;
+    char  *ns;
+    int    ret;
+    int    j;
 
     if (cb0 == NULL){
         clicon_err(OE_XML, EINVAL, "cb0 is NULL");
@@ -130,7 +138,6 @@ xpath_append(cbuf      *cb0,
         else if (strcmp(id, "..") == 0){
             if (initialups){
                 /* Subtract from xpath0 */
-                int j;
                 for (j=cbuf_len(cb0); j >= 0; j--){
                     if (xpath0[j] != '/')
                         continue;
@@ -145,6 +152,18 @@ xpath_append(cbuf      *cb0,
         }
         else{
             initialups = 0;
+            /* If prefix is not in nsc, it needs to be added */
+            if (prefix && cvec_find(nsc, prefix) == NULL){
+                ns = NULL;
+                if ((ret = yang_find_namespace_by_prefix(y, prefix, &ns)) < 0)
+                    goto done;
+                if (ret == 0){
+                    clicon_err(OE_DB, 0, "Prefix %s does not have an associated namespace", prefix);
+                    goto done;
+                }
+                if (xml_nsctx_add(nsc, prefix, ns) < 0)
+                    goto done;
+            }
             cprintf(cb0, "/%s:%s", prefix?prefix:myprefix, id);
         }
         if (prefix){

test/test_cli_leafref.sh

@@ -11,6 +11,7 @@ APPNAME=example
 
 cfg=$dir/conf_yang.xml
 fyang=$dir/example-leafref.yang
+fyang2=$dir/example-other.yang
 clidir=$dir/clidir
 if [ ! -d $clidir ]; then
     mkdir $clidir
@@ -22,8 +23,7 @@ cat <<EOF > $cfg
   <CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
   <CLICON_FEATURE>ietf-netconf:startup</CLICON_FEATURE>
   <CLICON_YANG_DIR>${YANG_INSTALLDIR}</CLICON_YANG_DIR>
-  <CLICON_YANG_DIR>$dir</CLICON_YANG_DIR>
-  <CLICON_YANG_MODULE_MAIN>example-leafref</CLICON_YANG_MODULE_MAIN>
+  <CLICON_YANG_MAIN_DIR>$dir</CLICON_YANG_MAIN_DIR>
   <CLICON_BACKEND_DIR>/usr/local/lib/$APPNAME/backend</CLICON_BACKEND_DIR>
   <CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>
   <CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
@@ -147,6 +147,30 @@ module example-leafref{
 }
 EOF
 
+cat <<EOF > $fyang2
+module example-other{
+   yang-version 1.1;
+   namespace "urn:example:other";
+   prefix oth;
+   import example-leafref {
+      prefix ex;
+   }
+    /* leafref to other module */
+    container leafrefother {
+        description "Leafref absolute path to other module";
+        list leafref{
+           key name;
+           leaf name {
+              type leafref{
+                 path "/ex:table/ex:parameter/ex:name";
+                 require-instance true;
+              }
+           }
+        }
+    }
+}
+EOF
+
 # clispec files 1..6 for submodes AAA and BBB as described in top comment
 
 cat <<EOF > $clidir/cli1.cli
@@ -212,8 +236,6 @@ expectpart "$(echo "set identityrefs identityref ?" | $clixon_cli -f $cfg 2> /de
 # Expected:
 # <name>
 # CLI syntax error: "set leafrefs leafref": Incomplete command
-echo "set leafrefs leafref ?" | $clixon_cli -f $cfg -o CLICON_CLI_EXPAND_LEAFREF=false
-
 new "expand leafref 1st level"
 expectpart "$(echo "set leafrefs leafref ?" | $clixon_cli -f $cfg -o CLICON_CLI_EXPAND_LEAFREF=false 2> /dev/null)" 0 "<name>" --not-- "91" "92" "93"
 
@@ -291,6 +313,12 @@ expectpart "$($clixon_cli -1 -f $cfg -l o commit)" 0 "^$"
 new "show config"
 expectpart "$($clixon_cli -1 -f $cfg -l o show config cli)" 0 "set table parameter 91" "set table parameter 92" "set table parameter 93" "set leafrefs leafref 91" "set leafrefs leafref 93" "set identityrefs identityref ex:des" "set identityrefs identityref ex:des3" "set leafrefs2 leafref 91" "set identityrefs2 identityref ex:des" --not-- "set identityrefs identityref ex:des2" "set leafrefs leafref 92"
 
+new "set leafrefother aaa"
+expectpart "$(echo "set leafrefother leafref ?" | $clixon_cli -f $cfg -o CLICON_CLI_EXPAND_LEAFREF=true 2> /dev/null)" 0 "91" "92" "93"
+
+new "cli commit"
+expectpart "$($clixon_cli -1 -f $cfg -l o commit)" 0 "^$"
+
 if [ $BE -ne 0 ]; then
     new "Kill backend"
     # Check if premature kill